# -*- coding: utf-8 -*-

def func_test(src):
    return src.lower()


def func_test2(src: str) -> str:
    return src.lower()


# print(func_test("AASSDD"))
# print(func_test2("AASSDD"))

lst1 = [3, 6, 1, 8, 1, 9, 2]
lst2 = [3, 1, 2, 6, 4, 8, 7]
ll = []
for x in lst1:
    for y in lst2:
        if x + y == 10:
            ll.append((x, y))
print(ll)

src_str = input("请输入字符串：")
str_len = len(src_str)
for i in range(str_len // 2):
    if src_str[i] != src_str[str_len - 1 - i]:
        print("不是")
        break
else:
    print("是")


# src = eval('__import__("os").system("ls ~")')
# src = eval('__import__("os").system("cd ~/Desktop && rm -rdf del-test")')

# src = int(input("请输入："))
# print("输入的是：{}".format(src))

# __import__("os").system("dir c:/")
